The conclusion that is supported by the statement is : Desertification reduced the amount of arable land available to Africans and Europeans
Since the land couldn't be used to grow Crops, the ancient European does not see African Land as a region that is worth to conquer. Even until today, the modern African only used Sahara as an highway
the answer is a because an absolute monarchy is NEVER considered to be democratic because it is where one ruler of royal blood has all the power and the people don't get a say